Test Preparation on Human reproduction – II Biology Test Series for NEET - 2020
The mammalian blastula is known as
Which one of the following statements about morula in
humans is correct
The fourth cleavage plane during development of frog’s egg
is
Cleavage is followed by which stage
(b) This segmentation cavity is known as blastocoel.
Cockroach egg is called as
(d) The egg of cockroach is centrolecithal type i.e., yolk
present in the centre.
Human eggs are
(a) Microlecithal or Alecithal or Oligolecithal or
mesolecithal eggs containing a small amount of yolk or
without any yolk e.g., starfish Amphioxus, eutherion
mammals (Rabbit and man).
The cleavage having incomplete division (partial cleavage)
of egg is known as
(b) Meroblastic is also called partial or incomplete cleavage
occurs in macrolecithal and teloleicthal egg. The
cleavage furrow divides the small amount of active
cytoplasm of animal pole most of yolky portion of
vegetal pole or central area of egg remains undivided.
The eggs of ovoviviparous species are
(c) Macrolecithal or polylecithal eggs contain very large
amount of yolk eg. monotremata (Prototherian
mammals) reptiles birds etc.
What is true about cleavage in the fertilised egg in humans
(b) Cleavage in the fertilised egg in humans occurs in the
fallopian tube (oviduct) during the conduction of zygote
towards uterus.
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